In general, you don't want to alter the Apple audio 'driver'. It's actually several components and if one is changed it will get out of sync with the other components. That will lead to severe instability.

Since Vent is working for a vast number of people, the issue would most likely be the Razer software or possibly something else installed in your Mac interfering with it.

Can you totally remove any Razer software that's installed and try it with just the build in Mac software?